Smoke-tube superheater.



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B, THOBQSEN @L Dormj?. SMOKE TUBE SUPEHBATBB, P P-LIGATIOH-ILED 00T. 29, 1912.

Patented Sept. 16, 193.4

Cif:

?ETEM {TIQBSEN SCHMIDTSCEE SASSEL, GER-MANY, A.

.more ri ronnrron' or Epecilnpion oi Letters .Patent Application filed Qotober 191:2. Serial No. l.

To all tlf/0mmay concern,

Be. it lgnoin that. We, Poren lr-ioiisnr: and lloirozvr DeIrr'rLCrr, snhieots of the King of lrii'nssin, Emperor of Germany, residing' :it Cassel, Germany, have invented n certain new and useful ln'iprovement in Smoke-'lube Superheoters, or which the Vfollowing a specification.

Our invention relates lto sniolre tube superhenters and particularly to those 'for locornotives.

Under certain conditions of Working, 'for instance, when the engine is Stopped und when the boiler is fired np, ditticnlties Litige in connection with overheating of the' Superlieoter pipes hec-ense et such times they :ire not Cooled by the pass/ing' steam end it is the obje-'ct of the present invention to overcome these difficulties. To attain this purpose e pipe is led frein the super-heatedssteziin header through which pipe the steam czniloe 'led to the blower of the locomotive, :l shutting-off device being arranged at the outlet-aperture of the superheated steamliezider .which `closes the latter when the steam supply to the engine shall he shut oli.

The accompanying drawing illustrates an example of one forni of the present invention i which :i controlling valve is arranged :it the Steam chamber oi? the snperlienter so as to allow the engine.' to work either with superheated steam, with saturated er with inixed steam.

Figure l shows a sectional View through the superheater, the controlling valve being set to allow the engine to be Worked with snperhefited stczinL Fig. 2 shows the position ofi the valve when shutting oi `the posseggo of steam to the engine; Fig. S shows the zelve so placed that e part only of `the boiler steam passes through the superheater, the remainder going` to the engine direct.

In the accompanying drawing, va is the stcain space of the locomotive boiler, the Smoke tubes and Z the superheathr tnoes.

The saturated steam ends or the superheater tubes are expended into the bottoni Wall of n chamber 7L and the snperheated eterno ends oonnccted to on adjoining' chamber i. ,he clienrher /zy represents the saturated sitcom header and the cliinnhcr fthe snp hearted .steam header or the .superhooteix he stcorn enters the ont ned steam tdci',

l thns :is shown by the :ii-rows., by wey oit the porto unf leiivcs snpei'heated steen; header hy 'Way of the port j! in order to he lcd to the cngjine through the chamber lf, the port ot which is indimted et. g. The course of the stcnin con controlled .hy operation ot the rotary volvo which compri es the vulve clnnnher kind the arched volte nien'iber n with terminulilanges o.

ln accordance with the present ini'cntion i steam pipe m is led troni the snperheolerl steam header 'by ineens of which superlieoted steznn passers to the blower. The Steam pipe m provided with n. controlling` ValveI (not shown) so that the ilon oit etenin may he regulated stopped ns required.

In the example illustrated, the controlling ialve (Z can itself he iis-cd :is the regulator (moin -slnittinfg-oll de fico). lt is udtisiil'lc, o o we ver, addition, :is the controlling valve may then be more easily adjusted. v.lore should however he taken that the regulator is closed before adjusting the. controlling valve.

The operation of the derice `doeoribed is ns follows: lilith the Controlling vulve (1:14 shown in Fig. 1 steznn from the boiler passes throngli the port c into the saturated steani header 7i ond thence through the super-hentinfr tubes into the snperlienled steam header 'i and so through the port f, the arch n., and

the port g, into the chamber /ly find so to the.

cylinders. ln Fig. i? the valve niemhcr n lisis been moved so that its flange 0 covers the porty j of the superheoted stezirn header. The passage of sinierhentcd steam to the engine is thus shut oil'. As the port e of the saturated steam header however is open to the boiler the snperheziter is full of steam and when the shntoit' device of the auxiliary pipe m is opened steznn can lie led away to the blowers. ln this Way when the locomotive is stationary or especially when the boiler isl started, n. flow of stefan is insured through tne snperhenter tubes Wllich'nro prevented ironi overheating. Fig. 3 shows the position of the valve lnelnhcr in 'which n port onlY of the .slicein pannes `lvi the snperhenter the remainder p:

into the cliein'ocr f and so to the r* the eiixiliery ji the primary n t ion ot Stoom to supply 'the nszinl regnlatm in' present invention suchas the form` and arr. 'rangement of headers or collectors,xsup'er through the superheater tubes when the steam to the cylindersy is shut oil', nevertheless it will be seen that steam may also be drawn through the auxiliary pipe m even when steam is passing to the cylinders.

It will be evident that the details of the heating tubes and controlling valves may be varied to a very large extent without departing from the feature of taking superheated steam for 4the blower so as to insurea circulation through the. superheater tubes. According to the present invention the' superheatertubes are" cooled just by that steain which causes a danger to tthe super'-l `heater tubes when the fire is' blown up.

Having described our invention, we claim: 1. In a locomotive provided with a blower and smoke tube superheater of the class described, the combination of a superheated steam header having steam connection withl the engine cylinders, a valve for closin oi'- said steam connection, and an outlet tromi, said header between the valve and the superheater elements connected to the blower.

' 2. lIn a locomotive provided with a blower and smoke'itube superheater of the class de scribed, the combination of a saturated steam header having steam connection with the boiler, a superheated steam header having steam connection with the engine cylin? ders, a direct connection between the'boiler and the cylinders, a valve controlling said three connections. and adapted to simultane-,- ously close the connection between superheated header and engine cylinders and the direct connection between boiler and engine cylinders, and an outlet from the superheated header between the valve and the scribing witnesses.

Loveoa Superheater elements coniiectedb to the blower. i Y,

3a In a locomotive provided with a blower and smoke tube superhea'ter of the class described, the combination of a valve havingports connected respectively with the boiler the saturated steam header, the superheate steam header and the engine cylinders and provided witha valve memberarran'ged tof lsimultaneonsly close the ports ctthe'su' erheated header and of the engine cylin ers, with the su being4 provied with a blower outlet be- 'tween the valve chamber' and 'the superheaterelements. A

et, In a locomotive provided with a blower and smoke tube superheater of theclase de` scribed, the combination of a valve having ports arranged one after the other and connected respectively with the-boiler, the saturated steam header, the superheated steam header'and the engine cylinders, the width In testimony whereof, we have hereuntoset our hands in the presence of two sub- PETER THOMSEN.

Witnesses: i

CARL Mo'rr, ARTHUR UBARTEIS.

erheated header said'headen 

